iceshrimp/packages/client/src/pizzax.ts
ThatOneCalculator 2aab2de38d refactor: 🎨 rome
2023-01-12 20:40:33 -08:00

250 lines
6.1 KiB
TypeScript

// PIZZAX --- A lightweight store
import { onUnmounted, Ref, ref, watch } from "vue";
import { $i } from "./account";
import { api } from "./os";
import { stream } from "./stream";
type StateDef = Record<
string,
{
where: "account" | "device" | "deviceAccount";
default: any;
}
>;
type ArrayElement<A> = A extends readonly (infer T)[] ? T : never;
const connection = $i && stream.useChannel("main");
export class Storage<T extends StateDef> {
public readonly key: string;
public readonly keyForLocalStorage: string;
public readonly def: T;
// TODO: これが実装されたらreadonlyにしたい: https://github.com/microsoft/TypeScript/issues/37487
public readonly state: {
[K in keyof T]: T[K]["default"];
};
public readonly reactiveState: {
[K in keyof T]: Ref<T[K]["default"]>;
};
constructor(key: string, def: T) {
this.key = key;
this.keyForLocalStorage = `pizzax::${key}`;
this.def = def;
// TODO: indexedDBにする
const deviceState = JSON.parse(
localStorage.getItem(this.keyForLocalStorage) || "{}",
);
const deviceAccountState = $i
? JSON.parse(
localStorage.getItem(`${this.keyForLocalStorage}::${$i.id}`) || "{}",
)
: {};
const registryCache = $i
? JSON.parse(
localStorage.getItem(`${this.keyForLocalStorage}::cache::${$i.id}`) ||
"{}",
)
: {};
const state = {};
const reactiveState = {};
for (const [k, v] of Object.entries(def)) {
if (
v.where === "device" &&
Object.prototype.hasOwnProperty.call(deviceState, k)
) {
state[k] = deviceState[k];
} else if (
v.where === "account" &&
$i &&
Object.prototype.hasOwnProperty.call(registryCache, k)
) {
state[k] = registryCache[k];
} else if (
v.where === "deviceAccount" &&
Object.prototype.hasOwnProperty.call(deviceAccountState, k)
) {
state[k] = deviceAccountState[k];
} else {
state[k] = v.default;
if (_DEV_) console.log("Use default value", k, v.default);
}
}
for (const [k, v] of Object.entries(state)) {
reactiveState[k] = ref(v);
}
this.state = state as any;
this.reactiveState = reactiveState as any;
if ($i) {
// なぜかsetTimeoutしないとapi関数内でエラーになる(おそらく循環参照してることに原因がありそう)
window.setTimeout(() => {
api("i/registry/get-all", { scope: ["client", this.key] }).then(
(kvs) => {
const cache = {};
for (const [k, v] of Object.entries(def)) {
if (v.where === "account") {
if (Object.prototype.hasOwnProperty.call(kvs, k)) {
state[k] = kvs[k];
reactiveState[k].value = kvs[k];
cache[k] = kvs[k];
} else {
state[k] = v.default;
reactiveState[k].value = v.default;
}
}
}
localStorage.setItem(
`${this.keyForLocalStorage}::cache::${$i.id}`,
JSON.stringify(cache),
);
},
);
}, 1);
// streamingのuser storage updateイベントを監視して更新
connection?.on(
"registryUpdated",
({
scope,
key,
value,
}: {
scope: string[];
key: keyof T;
value: T[typeof key]["default"];
}) => {
if (
scope.length !== 2 ||
scope[0] !== "client" ||
scope[1] !== this.key ||
this.state[key] === value
)
return;
this.state[key] = value;
this.reactiveState[key].value = value;
const cache = JSON.parse(
localStorage.getItem(
`${this.keyForLocalStorage}::cache::${$i.id}`,
) || "{}",
);
if (cache[key] !== value) {
cache[key] = value;
localStorage.setItem(
`${this.keyForLocalStorage}::cache::${$i.id}`,
JSON.stringify(cache),
);
}
},
);
}
}
public set<K extends keyof T>(key: K, value: T[K]["default"]): void {
if (_DEV_) console.log("set", key, value);
this.state[key] = value;
this.reactiveState[key].value = value;
switch (this.def[key].where) {
case "device": {
const deviceState = JSON.parse(
localStorage.getItem(this.keyForLocalStorage) || "{}",
);
deviceState[key] = value;
localStorage.setItem(
this.keyForLocalStorage,
JSON.stringify(deviceState),
);
break;
}
case "deviceAccount": {
if ($i == null) break;
const deviceAccountState = JSON.parse(
localStorage.getItem(`${this.keyForLocalStorage}::${$i.id}`) || "{}",
);
deviceAccountState[key] = value;
localStorage.setItem(
`${this.keyForLocalStorage}::${$i.id}`,
JSON.stringify(deviceAccountState),
);
break;
}
case "account": {
if ($i == null) break;
const cache = JSON.parse(
localStorage.getItem(`${this.keyForLocalStorage}::cache::${$i.id}`) ||
"{}",
);
cache[key] = value;
localStorage.setItem(
`${this.keyForLocalStorage}::cache::${$i.id}`,
JSON.stringify(cache),
);
api("i/registry/set", {
scope: ["client", this.key],
key: key,
value: value,
});
break;
}
}
}
public push<K extends keyof T>(
key: K,
value: ArrayElement<T[K]["default"]>,
): void {
const currentState = this.state[key];
this.set(key, [...currentState, value]);
}
public reset(key: keyof T) {
this.set(key, this.def[key].default);
}
/**
* 特定のキーの、簡易的なgetter/setterを作ります
* 主にvue場で設定コントロールのmodelとして使う用
*/
public makeGetterSetter<K extends keyof T>(
key: K,
getter?: (v: T[K]) => unknown,
setter?: (v: unknown) => T[K],
) {
const valueRef = ref(this.state[key]);
const stop = watch(this.reactiveState[key], (val) => {
valueRef.value = val;
});
// NOTE: vueコンポーネント内で呼ばれない限りは、onUnmounted は無意味なのでメモリリークする
onUnmounted(() => {
stop();
});
// TODO: VueのcustomRef使うと良い感じになるかも
return {
get: () => {
if (getter) {
return getter(valueRef.value);
} else {
return valueRef.value;
}
},
set: (value: unknown) => {
const val = setter ? setter(value) : value;
this.set(key, val);
valueRef.value = val;
},
};
}
}